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Virtualization using Oracle VM VirtualBox for building two node Oracle RAC 11gR2 (11.2.0.2) cluster where Oracle 11.2.0.2 RDBMS coexists with 10gR2 (10.2.0.5) RDBMS based on Linux (OEL 5.4)

Virtualization using Oracle VM VirtualBox for building two node Oracle RAC 11gR2 (11.2.0.2) cluster where Oracle 11.2.0.2 RDBMS coexists with 10gR2 (10.2.0.5) RDBMS based on Linux (OEL 5.4)

In the article you will have a look at how to use some Oracle VirtualBox features to build two node Oracle 11gR2 (11.2.0.2) RAC system on Oracle Enterprise Linux (OEL 5). The setup will implement a role separation with different users for Oracle RDBMS and Oracle GI that is, user oracle and grid respectively in order to split the responsibilities between DBAs and storage administrators. Article will emphasize on the additional CRS reconfiguration necessary for Oracle 10gR2 and 11.2 databases to coexist on the same cluster running GI 11.2.0.2.

An overview to Oracle Virtualization solutions can be seen here. You can see how to use Oracle VM VirtualBox to build a two node Solaris cluster here.

You will configure Linux in an Oracle VM VirtualBox Virtual machines, install Oracle GI, Oracle RDBMS and will create a database.

The following software will be used:

  1. Oracle 11gR2 (11.2.0.2) for Linux (x86-64). Patch 10098816. Download from MOS here.
  2. Oracle Enterprise Linux (x86-64). Download from here.
  3. Oracle VM VirtualBox 4.1.0. Download from here.

Two virtual machines, raclinux1 and raclinux2, will be configured each with:

  • 4GB RAM
  • 400GB bootable disk (Disk space will be dynamically allocated not a fixed size pre-allocation)
  • NIC – NAT: for access to Internet
  • NIC – bridged for public interface in RAC with address 192.168.20.21/22 (first IP 192.168.20.21 on raclinux1 and second IP 192.168.20.22 on node raclinux2). These are public interface in RAC.
  • NIC – bridged for private interface in RAC with address 10.10.20.21/22 (first IP 10.10.20.21 on raclinux1 and second IP 10.10.20.22 on node raclinux2). These are private interface in RAC.
  • NIC – Host Only : for FTP/SSH/telnet/SCP access from the host OS to the guest OS. (first IP 192.168.56.101 on raclinux1 and second IP 192.168.56.102on node raclinux2).
  • 15 10GB attached shared disks for the ASM storage. (High Redundancy ASM disk groups will be deployed)

 

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September 29, 2011 Posted by | oracle | 2 Comments

   

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